Tom Sloan at Levitate Architects came up with a neat solution to a storage problem in this London Victorian apartment:

We created a 'secret' staircase, hidden from the main reception room, to access a new loft bedroom lit by roof lights. Limited by space, we melded the idea of a staircase with our client's desire for a library to form a 'library staircase' in which English oak stair treads and shelves are both completely lined with books.